A magnitude 5.1 earthquake struck very close to Pakistan's capital of Islamabad, the U.S. Geological Survey (USGS) said on Friday.Although the quake had a moderate magnitude, its epicentre was only 10 miles (16 km) northeast of the populous city.It struck at 1:59 a.m. on Saturday (2059 GMT on Friday) and was very shallow, only 16.2 miles (26 km) deep, the USGS said. A magnitude 5.1 quake is capable of causing considerable damage. (Reporting by Sandra Maler in Washington; Editing by Eric Beech)This story has not been edited by Firstpost staff and i...